231272937729 has 12 divisors (see below), whose sum is σ = 334124888656. Its totient is φ = 154152429912.

The previous prime is 231272937703. The next prime is 231272937751. The reversal of 231272937729 is 927739272132.

231272937729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231272937729 - 2²⁹ = 230736066817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231272937799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2411059 + ... + 2505144.

Almost surely, 2^231272937729 is an apocalyptic number.

It is an amenable number.

231272937729 is a deficient number, since it is larger than the sum of its proper divisors (102851950927).

231272937729 is a wasteful number, since it uses less digits than its factorization.

231272937729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921436 (or 4921433 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The spelling of 231272937729 in words is "two hundred thirty-one billion, two hundred seventy-two million, nine hundred thirty-seven thousand, seven hundred twenty-nine".